The Importance of the Double Product in the Six-Minute Walk Test to Predict Myocardial Function

Figure 2

(a) Walking distance covered during the 6MWT in the group of patients with heart failure and reduced left ventricular systolic function HF (↓ EF), with heart failure and preserved left ventricular systolic function (HFpEF) and in the control group (without HF). Data are presented as mean ± SEM. means p <0.05 between the HFpEF group and the control group

(b) An increase in the double product corresponding to 1-meter walk in patients during 6MWT. HF (↓ EF): heart failure with reduced left ventricular systolic function; HFpEF: group with heart failure and preserved left ventricular systolic function; without HF: control group. Data are presented as mean ± SEM. means p <0.05 between the control group and HFpEF and between the control group and HF (↓ EF)

(c) An increase in the double product in patients during 6MWT. HF (↓ EF): heart failure with reduced left ventricular systolic function; HFpEF: group with heart failure and preserved left ventricular systolic function; without HF: the control group. Data are presented as mean ± SEM. means p <0.05 between the control group and the HF group (↓ EF)